source: ps2launchargs/source/uLaunchELF/vmcfs/src/vmc_fs.c

#include "vmc.h"


 //  Driver fonctions

#define MODNAME "vmc_fs"
IRX_ID ( MODNAME, 1, 2 );


// Static variables.
static iop_device_t     s_Vmc_Driver;
static iop_device_ops_t s_Vmc_Functions;

// Global variables.
struct global_vmc          g_Vmc_Image[ 2 ];
int                        g_Vmc_Remove_Flag;
int                        g_Vmc_Initialized;

//----------------------------------------------------------------------------
// Initialize vmc driver
//----------------------------------------------------------------------------
int Vmc_Initialize ( iop_device_t * driver ) 
{

        if ( g_Vmc_Initialized ) 
                return VMCFS_ERR_NO;

        g_Vmc_Initialized = TRUE;

        //  init the global file descriptor to something negative ( ubergeek like 42, and polo like 35 so - 4235 ) 
        g_Vmc_Image[ 0 ].fd = -4235;
        g_Vmc_Image[ 1 ].fd = -4235;

        DEBUGPRINT ( 1, "vmcfs: Filesystem Driver Initialized\n" );

        return VMCFS_ERR_NO;
}


//----------------------------------------------------------------------------
// Deinitialize vmc driver
//----------------------------------------------------------------------------
int Vmc_Deinitialize ( iop_device_t * driver ) 
{

        int i = 0;
        
        if ( !g_Vmc_Initialized ) 
                return VMCFS_ERR_INITIALIZED;

        g_Vmc_Initialized = FALSE;
        
        for ( i = 0; i < 2; i++ )
        {
        
                if( g_Vmc_Image[ i ].fd >=0 )
                {
                        
                        close ( g_Vmc_Image[ i ].fd );
                        
                }
                
        }

        DEBUGPRINT ( 1, "vmcfs: Filesystem Driver Deinitialized\n" );

        return VMCFS_ERR_NO;

}

// Entry point of the driver.
int _start ( int argc, char*  * argv ) 
{

        printf ( "vmcfs: Created by ubergeek42\n" );
        printf ( "vmcfs: ... Improved by Polo35.\n" );
        printf ( "vmcfs: Version 1.2\n" );

        g_Vmc_Initialized = FALSE;
        g_Vmc_Remove_Flag = FALSE;

        s_Vmc_Driver.type    = (IOP_DT_FS | IOP_DT_FSEXT);
        s_Vmc_Driver.version = 1;
        s_Vmc_Driver.name    = "vmc"; //  the name used to access this device ( eg: vmc0:  /  ) 
        s_Vmc_Driver.desc    = "Virtual Memory Card s_Vmc_Driver";
        s_Vmc_Driver.ops     = &s_Vmc_Functions;

        //  Typecasting to ( void* ) eliminates a bunch of warnings.
        s_Vmc_Functions.init       = Vmc_Initialize;
        s_Vmc_Functions.deinit   = Vmc_Deinitialize;
        s_Vmc_Functions.format   = Vmc_Format;
        s_Vmc_Functions.open       = Vmc_Open;
        s_Vmc_Functions.close      = Vmc_Close;
        s_Vmc_Functions.read       = Vmc_Read;
        s_Vmc_Functions.write      = Vmc_Write;
        s_Vmc_Functions.lseek      = Vmc_Lseek;
        s_Vmc_Functions.ioctl      = Vmc_Ioctl;
        s_Vmc_Functions.remove   = Vmc_Remove;
        s_Vmc_Functions.mkdir      = Vmc_Mkdir;
        s_Vmc_Functions.rmdir      = Vmc_Rmdir;
        s_Vmc_Functions.dopen      = Vmc_Dopen;
        s_Vmc_Functions.dclose   = Vmc_Dclose;
        s_Vmc_Functions.dread      = Vmc_Dread;
        s_Vmc_Functions.getstat  = Vmc_Getstat;
        s_Vmc_Functions.chstat   = Vmc_Chstat;
        /* Extended ops start here. */
        s_Vmc_Functions.rename   = Vmc_Rename;
        s_Vmc_Functions.chdir    = Vmc_Chdir;
        s_Vmc_Functions.sync     = Vmc_Sync;
        s_Vmc_Functions.mount    = Vmc_Mount;
        s_Vmc_Functions.umount   = Vmc_Umount;
        s_Vmc_Functions.lseek64  = Vmc_Lseek64;
        s_Vmc_Functions.devctl   = Vmc_Devctl;
        s_Vmc_Functions.symlink  = Vmc_Symlink;
        s_Vmc_Functions.readlink = Vmc_Readlink;
        s_Vmc_Functions.ioctl2   = Vmc_Ioctl2;


        //  Add the Driver using the ioman export
        DelDrv ( s_Vmc_Driver.name );
        AddDrv ( &s_Vmc_Driver );

        //  And we are done!
        DEBUGPRINT ( 1, "vmcfs: Filesystem Driver %s added!\n", s_Vmc_Driver.name );

        return 0;

}